1 files changed, 72 insertions, 0 deletions
diff --git a/main.go b/main.go
index 012667e..9027dbb 100644
--- a/main.go
+++ b/main.go
@@ -21,6 +21,8 @@ package main
 import (
 	"fmt"
 	"os"
+	"path/filepath"
+	"strings"
 )
 
 func main() {
@@ -60,4 +62,74 @@ func usageAndExit() {
 }
 
 func commandIndex() {
+	oldIndex := ReadIndex()
+	var newIndex Index
+
+	//check if existing index entries are still checked out
+	existingRepos := make(map[string]*Repo)
+	for _, repo := range oldIndex.Repos {
+		gitDirPath := filepath.Join(repo.AbsolutePath(), ".git")
+		fi, err := os.Stat(gitDirPath)
+		if err == nil {
+			if fi.IsDir() {
+				//everything okay with this repo
+				existingRepos[repo.CheckoutPath] = repo
+				newIndex.Repos = append(newIndex.Repos, repo)
+				continue
+			}
+			FatalIfError(fmt.Errorf("%s is not a directory: I'm seriously confused", gitDirPath))
+		}
+		if !os.IsNotExist(err) {
+			FatalIfError(err)
+		}
+
+		//repo has been deleted - ask what to do
+		fmt.Printf("repository %s has been deleted\n", filepath.Join(RootPath, repo.CheckoutPath))
+
+		var remoteURLs []string
+		for _, remote := range repo.Remotes {
+			if remote.Name == "origin" {
+				remoteURLs = []string{remote.URL}
+				break
+			}
+			remoteURLs = append(remoteURLs, remote.URL)
+		}
+
+		var choice string
+		if len(remoteURLs) == 0 {
+			choice = Prompt(
+				"no remote to restore from; (d)elete from index or (s)kip?",
+				[]string{"d", "s"},
+			)
+		} else {
+			choice = Prompt(
+				fmt.Sprintf("(r)estore from %s, (d)elete from index, or (s)kip?", strings.Join(remoteURLs, " and ")),
+				[]string{"r", "d", "s"},
+			)
+		}
+
+		switch choice {
+		case "r":
+			FatalIfError(repo.Checkout())
+			newIndex.Repos = append(newIndex.Repos, repo)
+		case "d":
+			continue
+		case "s":
+			newIndex.Repos = append(newIndex.Repos, repo)
+		}
+	}
+
+	//index new repos
+	FatalIfError(ForeachPhysicalRepo(func(newRepo Repo) error {
+		repo, exists := existingRepos[newRepo.CheckoutPath]
+		if exists {
+			//update the existing index entry with the new remotes
+			repo.Remotes = newRepo.Remotes
+		} else {
+			newIndex.Repos = append(newIndex.Repos, &newRepo)
+		}
+		return nil
+	}))
+
+	newIndex.Write()
 }